Ground key stop and waste cock.



W. F. 'TOBIN.

GROUND KEY STOP AND WASTE COCK.

APPLICATION FILED MAY 31, 1916.

1 02,003 Patented Oct. 17, 1916.

WITNESS v I IN VEN TOR.

74% v W 75M tion on the line X of Fig. 1;

WILLIAM F. TOBIN, 0F PUEBLO, COLORADO.

GROUND KEY STOP AND WASTE COCK.

Specification of Letters Patent.

Patented'Oct. 17, 1916.

Application filed. May 31, 1916. Serial No. 100,751.

To all whom it may concern:

Be it known that I, \VILLIAM F. ToBIN, a citizen of the United States,and a resident of Pueblo, in the county of Pueblo and State of Colorado,have invented a certain new and useful Improvement in Ground Key Stopand Waste Cocks, of which the following is a full, clear, and exactdescription.

This invention is an improvement in ground key cocks and particularly instop and waste cocks and its object is the provision of a device inwhich the transmission of shocks or blows through the operating rod orhandle to the plug key to jam or set the same will be renderedimpossible. Broadly speaking, this object is attained by providing aconnection between the operating rod and the plug key which is free toyield in the direction of the axis of the plug key, the operating rodmeanwhile having a bearing on the cock body whereby the force of anyshock or blow will be absorbed by the cock body instead of beingtransmitted to the plug key. In the particular embodiment of myinvention shown in the drawings the operating rod is seated in a capshaped member which has a rotatable bearing on the cock body and alwaysrests thereon, rotary movement being transmitted from the cap to theplug key by means of a floating square key free to yield with referenceto one or is seated. Ample clearance is also provided between the bottomof the cap and the top of the plug key so that the former can not setthe latter, the plug key being held to its seats by the action of a setnut alone.

A more detailed understanding of my invention will be had by a referenceto the accompanying single sheet of drawings in which- Figure 1 is aside elevation of a stop or hydrant cock made according to my invention,the operating portions of the device appearing in central, verticalsection; Fig. 2 is a plan view of the device with the inlet and outletconnections omitted, a portion of the View being broken away to show asee- Fig. 3 is a perspective view of the cap portion of the devicelooking at it from its larger or lower end; Fig. 1 is a perspective viewof the plug key viewed from the upper end; and Fig. 5 is a perspectiveview of the floating key.

Referring to the drawings, let 10 indicate both of the members in whichit inlet and 11 outlet connections of any desired shape which arepreferably formed as integral cast extensions of a cock body 12. Thetapered plug key 13 having the passage 14: therethrough'is seated insuitable seats in thebody 12 so that when in the position shown in Fig.1 it closes communication be tween the inlet and outlet ports and whenturned through a quarter revolution the passage 14 will affordcommunication between said connections. the threaded stud 16 serves toretain the plug 13 to its seats with the proper fit.

The plug 13 is provided with a square socket 17 in its upper end inwhich the square key 18 is adapted to be seated either a slight distanceabove the bottom of the socket 17 as indicated in Fig. 1 or in contactwith the bottom thereof, as may be preferred The body of the cook 12 hasa sleeve 19 upstanding therefrom, the inner surface of which constitutesthe upper seat for the plug 13 and the upper face of which has a lug 2Oprojecting therefrom to act as a stop for the rotating cap 21. This capis seated on and bears on the upper face of the sleeve 19 and is free tohave a limited rotation thereon, this rotation being limited by engagement of the lug 20 with the lug 22 on the inner face of the cap 21. Thiscap has a lower square socket 23 therein which is adapted to looselyreceive the correspondingly shaped key 18, and an upper socket for thereception of an operating lever or handle 24 preferably secured inposition by a set screw or the like 25. A division plate 26 forms aconvenient stop to prevent the operating rod 2t from entering far enoughto interfere with the key 18 but any other means as, for instance, asleeve on the operating rod 24; for performing the same function couldbe substituted therefor.

The cap 21 should be retained from displacement off its bearing on thesleeve 19 and I have illustrated this as attained by spinning or drawinga slight retaining sleeve 27 thereon which retaining sleeve reachesunder the sleeve 19 though any convenient means for attaining thisresult may be employed without departing from my invention.

Operation: The cock in the position shown in Figs. 1 and 2 is closed andthe end 28 of the lug 22 contacts with the right hand side of the lug 20as indicated by the dotted A set nut 15 screwed on line 29 Fig. 2, theposition of the end being indicated by the line 31 in the same figure.in a counter clock-wise direction through a quarter revolution thepassage 14 will be in position to open communication between the intake10 and the outlet 11 and when the quarter revolution is complete the surface 30 will contact with 20 to stop the movement. I

The fit of 18in thesocket23 being loose and the cap 21, which is rigidlysecured to the operating. rod or handle, having its bearingon thesleeve'19, any shock or blow givenfthe rod or handle 24: will betransmitted tothe cock body 12 instead of to the plugkey l3 and it willbe clear that the latter can not be set thereby, there being free playengagement always a. slightclearance space 32 between the plug key 18and the cap 21. 1

It. will be obvious that the element 18, whose function is to transmitrotary motion from the cap to the plug key withouttrans- 'mitting to theplug keyany stresses in a direction axial. thereof, may be free withrespect to both" the plug key and the. cap orwith reference to eitherone of the same and still perform its functions. therefore be clear thatthe element 18 may be rigid or even integral with the cap 21 does nottouch the and it'is in loose or with the sides therebottomaof the socket17 of; and that this and Havingthus described my invention what I claimand desire to secure by Letters Patent is': r

. C o is a If now the operating rod be turnedcock body, a plug key openor close said cock, a rotatable cap cover cock It will.

other changes in details of construction may be made wlthout departlngfrom my invention.

1.- In a device of the class described, a plug key operable therein, arotatable cap covering said plug key but spaced therefrom, said caphaving a bearing on said cock body, means for rotating said cap,andanaxially yielding connection between said cap and said plug key.

2. Inadevice of the class described, a rotatable therein to 111g saidplug key but spaced therefrom, said cap havinga bearing on said cockbody, an operating rod fixed in said cap, and an axially yieldingconnection between said cap and said plug key.

In a device of the class described, a body, a plug key rotatabletherein, a rotatable cap covering spaced therefrom, said cap having abear- I mg on said. cock body, one of said rotatable members having asquare socket therein, a square key carried by the other of saidrotatable members and having a sliding, nonrotatable fit in said squaresocket, and an operating rod fixed in said cap.

4. In a device of the class described, a cockbody, a plug key operabletherein, said plug key having a square socket initsupper end, arotatable cap covering said plug said plug key but key but spacedtherefrom,-said cap having a bearing on said cock body and beingprovided with a square socket in its lower face, a square key disposedin said sockets,'tl1e fit between said key andthe socket in said capbeing loose, and an operating rod rigidly connected to said cap.,

In testimony whereof I have hereunto aflixed my signature.

VILLIAM F. TOBIN.

Copies of this patent may be obtained forfivc cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

